<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>


    <!-- 卡片视图 -->
    <el-card>
        <!-- 2.准备echarts容器 -->
        <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>

  
</template>

<script>
// 1.导入echarts
import * as echarts from 'echarts';
import _ from 'lodash'
    export default {
        data(){
            return{
              // 需要合并的数据
                options: {
                  title: {
                    text: '用户来源'
                  },
                  tooltip: {
                    trigger: 'axis',
                    axisPointer: {
                      type: 'cross',
                      label: {
                        backgroundColor: '#E9EEF3'
                      }
                    }
                  },
                  grid: {
                    left: '3%',
                    right: '4%',
                    bottom: '3%',
                    containLabel: true
                  },
                  xAxis: [
                    {
                      boundaryGap: false
                    }
                  ],
                  yAxis: [
                    {
                      type: 'value'
                    }
                  ]
      }
            }
        },
        created(){

        },
        // 此时，页面元素已经渲染完毕
        async mounted(){
            // 3.准备DOM
            var myChart = echarts.init(document.getElementById('main'));

            const {data:res} = await this.$http.get('reports/type/1')
            if(res.meta.status !== 200) return this.$message.error('获取折线图数据失败!')
            // 4.绘制图表 展示数据
            const result = _.merge(res.data,this.options)
            myChart.setOption(result)
        },
        methods:{

        }
    }
</script>

<style>

</style>